Gasohol having corrosion inhibiting properties

Abstract

Liquid fuels for use in internal combustion engines comprising (i) a major fraction of hydrocarbons boiling in the gasoline boiling range, (ii) a minor amount of ethanol, and (iii) a corrosion inhibiting amount of a hydrocarbyl succinic acid or anhydride having from about 8 to 30 carbon atoms.

I claim: 
     
       1. A liquid fuel for use in internal combustion engines comprising a major amount of hydrocarbons boiling in the gasoline boiling range, a minor amount of ethanol, and a corrosion inhibiting amount of tetrapropenylsuccinic acid or anhydride. 
     
     
       2. The fuel of claim 1 wherein said ethanol is anhydrous or substantially anhydrous ethanol. 
     
     
       3. The fuel of claim 1 wherein said ethanol is hydrous ethanol. 
     
     
       4. The fuel of claim 3 wherein said ethanol contains up to about 5.0 volume percent water. 
     
     
       5. The fuel of claim 1 which comprises blending from about 70 to about 95 volume percent gasoline, from about 5 to about 30 volume percent hydrous ethanol and from about 1.0 to about 100 ppm of tetrapropenylsuccinic acid or anhydride.